I finished building a project i had long time in mind.
It is called A-SIM and it is a serial-interface peripheral which reads airspeed and sideslip values from the game through X-SIM and simulates what the air would feel like in an open cockpit. To create the airflow, it uses computer fans. In my case, it outputs around 4.25 m3/minute (~150 QFM), which is quite a lot. I have used it for IL2 open-cockpit airplanes, but it can be used for racing simulators too.
It is based on the PIC16F887, powered by 12Vdc, drives up to 4 PC fans(!) and its total cost is below 20 EUROS.
With 4 PC fans one could get around 10 m3/min, you would need goggles to face the screen!
(Schematic and .HEX file published)
Here are some limited pictures because i am having problems with my digital camera...
(Click on the thumbnails to see full size photos)
i used my PC's power supply to power A-sim, through the 12V line (yellow-black)
Here are the settings which were used in X-SIM:
~a01~: I.A.S. IAS_settings.jpg, IAS_math.jpg
~a02~: L_Slip L_Slip_settings.jpg, L_slip_math.jpg
~a03~: R_Slip R_Slip_settings.jpg, R_slip_math.jpg
USO Settings for X-SIM
The code and the schematic can be found here: A-SIM.zip
I will upload some videos soon.
Hope you find it helpful..